Steam engine

Details Steam engine Steam engine

2005-12-13

2005-12-13

Nguyen, Hoang (Department: 3748)

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

C060S660000, C060S670000

Reexamination Certificate

active

06973788

ABSTRACT:
A stem engine has a fluid container, a heating device and a cooling device. The fluid container has an outer pipe having an upper closed end, and an inner pipe provided in the outer pipe and having a fluid inlet port through which the inside of the inner pipe is operatively communicated with the outside of the inner pipe. The inner pipe has a pressure control device at its lower end, and a fluid injection port at its upper end for injecting the working fluid in the inner pipe into a space defined between the inner pipe and the outer pipe, when the pressure in the inner pipe is increased. The working fluid injected into the space between the inner and outer pipes is heated and vaporized by the heating device, so that volumetric expansion of the working fluid takes place to increase fluid pressure in the fluid container. The vaporized steam is then cooled and liquidized by the cooling device and thereby the volumetric contraction takes place, so that the fluid pressure is decreased. By repeating the above volumetric expansion and contraction of the working fluid, the pressure change is given to the working fluid in the fluid container.

REFERENCES:
patent: 4241722 (1980-12-01), Dickinson
patent: 4272383 (1981-06-01), McGrew
patent: 5008085 (1991-04-01), Bain et al.
patent: 5160581 (1992-11-01), Titmas
patent: 5879637 (1999-03-01), Titmas
patent: 6238568 (2001-05-01), Hazlebeck
patent: 6733667 (2004-05-01), Max
patent: 2004/0060294 (2004-04-01), Yatsuzuka et al.
patent: 7-180649 (1995-07-01), None

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